This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignees: Sony Corporation, Dainichiseika Color & Chemicals Mfg. Co., Ltd.. Active years: 1996-1998.
Company Filing History:
2 out of 58,145 
1 out of 265 Years Active: 1996-1998
Title: Kenji Takayanagi: Innovator in Cathode-Ray Tube Technology
Introduction
Kenji Takayanagi is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of display technology, particularly in the development of cathode-ray tubes. With a total of 2 patents, his work has had a lasting impact on the industry.
Latest Patents
One of Takayanagi's latest patents is for a cathode-ray tube that features activated green and blue phosphors. This innovative design includes a phosphor screen with a tricolor phosphor layer composed of red, green, and blue phosphors. The green phosphor is made of ZnS:Cu, Al activated with Ni, Fe, or Co, while the blue phosphor is ZnS:Ag activated with Ni, Fe, or Co. Notably, both the green and blue phosphors exhibit a decay intensity of at most 0.5% after 8 milliseconds of excitation removal. This advancement equalizes the afterglow characteristics of the green and blue phosphors with that of the red phosphor, enhancing the overall performance of the cathode-ray tube.
Another significant patent involves a minute-particle iron oxide red pigment slurry. This slurry is created by adding sodium silicate to the iron oxide red pigment, which is used to form a red filter in color cathode-ray tubes. This innovation ensures that the red filter does not discolor the black matrix during high-temperature manufacturing processes.
Career Highlights
Throughout his career, Kenji Takayanagi has worked with prominent companies such as Sony Corporation and Dainichiseika Color & Chemicals Mfg. Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in display systems.
Collaborations
Takayanagi has collaborated with notable coworkers, including Katsutoshi Ohno and Tsuneo Kusunoki. Their combined expertise has fostered advancements in the field of cathode-ray tube technology.
Conclusion
Kenji Takayanagi's contributions to the development of cathode-ray tubes and his innovative patents have significantly influenced the display technology landscape. His work continues to inspire future advancements in the industry.